A new statistical image reconstruction algorithm for polyenergetic X-ray CT

@article{Abella2009ANS,
  title={A new statistical image reconstruction algorithm for polyenergetic X-ray CT},
  author={M{\'o}nica Abella and Jeffrey A. Fessler},
  journal={2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro},
  year={2009},
  pages={165-168}
}
This paper presents a new statistical reconstruction algorithm for X-ray CT. The algorithm is based on Poisson statistics and a physical model that accounts for the measurement nonlinearities caused by energy-dependent attenuation. We model each voxel's attenuation as a mixture of bone and soft tissue by defining density-dependent tissue fractions, maintaining one unknown per voxel avoiding the need of a pre-segmentation. Rather than requiring the entire X-ray spectrum, the method approximates… CONTINUE READING